| MT | Reaction | 0.0253-eV | Maxwellian Average |
g-factor | Resonance Integral |
14-MeV | Fiss. Spec. Average |
|---|---|---|---|---|---|---|---|
| 1 | (n,total) | 15.88 (b) | 16.42 (b) | 1.034 | − | 2.396 (b) | 3.771 (b) |
| 2 | (n,elastic) | 4.210 (b) | 4.751 (b) | 1.128 | − | 1.175 (b) | 3.031 (b) |
| 4 | (n,inelastic) | ( E-thr = 381.6 keV ) | 262.5 (mb) | 700.6 (mb) | |||
| 16 | (n,2n) | ( E-thr = 8.119 MeV ) | 798.0 (mb) | 634.9 (μb) | |||
| 17 | (n,3n) | ( E-thr = 19.86 MeV ) | − | 6.016e-12 (b) | |||
| 22 | (n,na) | ( E-thr = 7.762 MeV ) | 26.86 (mb) | 5.993 (μb) | |||
| 28 | (n,np) | ( E-thr = 10.92 MeV ) | 11.65 (mb) | 2.673 (μb) | |||
| 102 | (n,γ) | 11.66 (b) | 11.67 (b) | 1.000 | 5.781 (b) | 177.9 (nb) | 2.180 (mb) |
| 103 | (n,p) | ( E-thr = 1.059 MeV ) | 96.51 (mb) | 26.73 (mb) | |||
| 107 | (n,a) | 0.000 (b) | 0.000 (b) | − | 41.53 (mb) | 25.85 (mb) | 9.686 (mb) |
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These cross sections are calculated from JENDL-3.2 at 300K.
The background color of each cell noted a cross section means the order of the cross-section value.
The unit of cross section, (b), means barns, and SI prefixes are used as following.
(kb) → 103(b), (mb) → 10−3(b),
(μb) → 10−6(b), (nb) → 10−9(b).
MT is a number that defines a reaction type. For the relation between MT and reaction type, please see here or refer to the manual of ENDF formats.
Maxwellian Average :
where T denotes the temperature, and kB the Boltzmann constant.
The upper and lower limits of integration, EL and EU
are set to 10−5 eV and 10 eV, respectively.
Resonance Integral :
with EL = 0.5 eV and EU = 10 MeV.
U-235 Thermal Fission-Neutron Spectrum Average (Fiss. Spec. Average) :
with EL = 10−5 eV and EU = 20 MeV.
The parameters a and b are 0.988 MeV and 2.249 MeV−1, respectively.
Westcott g-factor :
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